Schemas are one of the most popular explanatory concepts in cultural sociology, and are increasingly used in sociology more broadly. In this article we ask the question: have schemas been good to think with? We answer this question by analyzing the ontological, epistemic, and methodological bases of schemas, including the conceptualizations, claims, assumptions, and methods that underpin the use of schemas in sociological inquiry. We show that sociologists have developed two distinct, contradictory, and often conflated perspectives on schemas, what we refer to as culturalist and cognitivist perspectives. We suggest that schemas have acquired a polysemic character in sociology, and that they have become a (more narrow and consequently more scientifically legitimate) proxy for Culture, and that these features have (paradoxically) facilitated the popularity of schemas within the discipline. Sociologists have recently begun to make the necessary advancements to turn schemas into a more useful explanatory concept, through both analytical improvements (by distinguishing schemas from both public culture and other forms of nondeclarative personal culture), and methodological innovations (for better deriving schemas from survey data, texts, and experiments). Yet, some challenges remain, and the analytical value of schemas remains promissory. We conclude by offering some guidelines for making more specific and measured claims about schemas in sociological research.